13 Questions
What is the primary method of removing temporary hardness from water?
Boiling
What is the purpose of chlorination in water treatment?
Killing pathogenic bacteria
What is the primary function of sedimentation in water treatment?
Removing suspended solids
What is the result of adding lime (Ca(OH)2) to acidic water?
It increases the pH of water
What is the primary method of removing permanent hardness from water?
Ion exchange
What is flocculation in the context of water treatment?
The coming together of small suspended solids
What is the primary goal of flouridation in water treatment?
Strengthening teeth and preventing decay
What is the purpose of deionisation in water treatment?
Removing ions from water
What is the reaction that occurs when boiling is used to remove temporary hardness from water?
Decomposition of calcium hydrogencarbonate
What is the purpose of adding sulphuric acid in pH adjustment?
To lower the pH of basic water
What is the type of hardness that can be removed by methods other than boiling?
Permanent hardness
What is the ion exchanged with Ca²⁺ or Mg²⁺ ions in ion exchange method?
Na⁺ ions
What is the type of hardness that can be removed by boiling?
Temporary hardness
Learn about the causes of hard water, its effects, and methods of treatment such as boiling, distillation, flocculation, and filtration. Test your knowledge of water hardness and its removal techniques.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
